Trolley.



PATENTE-D m1511190? G. KERESZTES. Y TROLLEY. v A APPLIOATION FILED snm'.6.1907.

sur.,

l to be more particularly described and speci- UNITED sTAEs ATENTOFFICE.

GEORGE KEREsz'rEs, or rIrTsBURG, PENNSYLVANIA 5 TROLLEY.

specification of Lea-ers Patent. Application filed September 6, 1907.Sera-1No- 391,606.

Patented Dec. '17, 19o7.

To all whom 'it may concern:

Be it known that I, GEORGE Knnnsz'rns, a subject of the EmperorofAustria-Hungary, residing at Pittsbur -3209 Wampum street, in the countyof legheny and State of "Pennsylvania, have. invented certain new anduseful Improvements in Trolleys, of which the following is' aspecification, reference being had therein'to the accompanying drawin lThis Invention relates to certain new and novel 1m rovements 1ntrolleys-and more p particular yvto that class that wilLnot come llooffn the conductor wire accidentally.

vThe present invention has for its object to provide a trolley-wheelconstructed in a new and novel -form whereby the wire will beautomatically guided upon the trolley-wheel should the same becomeaccidentally de-l tached therefrom; furthermore, the `invention aims toprovide novel means that will assure an unbroken current, although thewire is not in cont actwith the trolley-wheel pro er. My inventionfurther aims to provide a trolley-wheel that will be extremely'simple inits construction, strong, durable, and comparatively inexpensive tomanufacture. cVYith the above and other objects in view, the inventionconsists in thenovelconstruction, combination, and arrangement of parts1 indicates a trolley harp, upon which is securely mounted a shaft 2,having screw threaded ends 3.-

This screw threaded shaft iSDsecurely mountedin the trolley-harp and issecured b means of nuts 4 arranged upon the screw t eaded portion 3.

lRevolubly mounted u on the said shaft 2 are arranged cone-shapesections 5, 5, upon which are'formed spiral paths 6'. Uponthe inner faceof the enlarged ends of the coneshaped sections 5 are formed annularrecesses 7, and upon the shaft `2 within the re- `cesses k7 .are rigidlysecured Washers 8, be-

tween said washers 8 is arranged upon the shaft A2 -a trolley wheel 9,which is revolubly mounted upon said shaft, and is arranged in a manner,to provideya `lateral movement upon the'shaft 2, and extending into therecesses 7.

The operation of my improved trolley is as follows: Shouldtheconductorwire become displaced from'a'trolley-wh'eel 9, it will beseen that, by reason of the spiral path 6 formed upon thecone-shaped'sections thel .wire will be readily conducted upon thetrolley-wheel 8, and when the trolley wheel traverses over curves andswitches, thevtrolley wheel will'be permitted to easily follow theconductor Wire by reason of lateral movement given the trolley-wheelupon the shaft 2 betweenthe washers 8.

It will be noted thatvarious changes may be made in'the novelconstruction as heretofore described and illustrated in the drawingswithout departing from the general spirit of my invention. y

Having fully described my invention,

what I claim and desire to secure by Letters Patent, is

In combination, a shaft having threaded ends, a pair of conoidal-shapedand peripiv" eral-shaped sections having their opposi endsrecessed, eachof said sections provide with an axialbore extending from the` verticalWall of its respective recess to its upper end, said bore of adiameter-seas to have the wall'thereof snugly fit theshaft-throughoutthe length of the bore, a pair of collars car- -ried by the shaft andabutting a ainst the vertical walls of the recesses, a tro ey wheelrotatably-mounted upon the shaft and capable of a longitudinal movement,said recesses providi means'whereby the trolley wheel can'shi tlongitudinall upon the shaft, said trolley Wheel of a 'ameterv less thanthe diameter of either of the recesses, a

harp having its ends engaging the 'shaft and abutting against the outerAendsof the seotions, the ends of the harp in connection Withn testimonywhereof I affix my signature in the presence of two witnesses.

GEORGE KERESZT-ES.

Witnesses:

A. H. RABSAIG, yMAX H. SROLOVITZ.

